Single-support attachment device for a formed structure

Abstract

The invention relates to an attachment device (1) for attaching an external functional element to a formed structure (2) obtained by pouring a casting fluid into a formwork and setting it therein, the formwork comprising at least one formwork element. The attachment device (1) comprises an inner part (4) which comprises: a contact portion (6) internally defining an attachment region (11) that opens to the outside via a peripheral edge (12); a holding element (7) configured to be in contact with an inner wall of the at least one formwork element, the holding element (7) being configured to be removable from the attachment region (11); and an attachment portion (8) defining at least one first securing element (9).

Description

[0001] DESCRIPTION

[0002] TITLE: Single-support fixing device for formwork structure

[0003] Technical field

[0004] The present invention relates to the field of construction and more particularly to a fixing device intended to ensure the fixing of an external functional element on a formwork structure, such as a formwork wall or a formwork slab for example, the formwork structure extending substantially parallel to an extension axis and being obtained by pouring and hardening a casting fluid inside a formwork comprising at least one formwork element, such as a formwork.

[0005] State of the art

[0006] It is known from the prior art to cover the exterior face of constructions made with concrete walls with a cladding or facing in order to obtain the desired level of finish or also to add thermal and / or sound insulation for example. The installation of the cladding / facing is generally carried out by drilling and then inserting a plurality of retaining mechanisms on the exterior face of the concrete walls. Although simple in design, this technical solution has the disadvantages of requiring time-consuming and tedious steps on a construction site.

[0007] Summary of the invention

[0008] The technical problem underlying the invention consists in particular in providing a fixing device making it possible to fix an external functional element to a structure obtained by casting in a formwork, while being ergonomic, simple to use and economical.

[0009] To this end, the present invention relates to a fixing device intended to ensure the fixing of an external functional element on a formwork structure, such as a formwork wall or a formwork slab for example, the formwork structure extending substantially parallel to an extension axis and being obtained by pouring and hardening a casting fluid inside a formwork comprising at least one formwork element, such as a formwork, the fixing device comprising: an internal part intended to be at least partially embedded in the formwork structure, and which comprises a. a contact part, internally delimiting a fixing zone opening outwards at a peripheral edge, b.a holding element, configured to be in contact with an internal wall of the at least one formwork element at the time of said casting, the holding element being able to occupy an insertion position in which all or part of the holding element is inserted inside at least part of the fixing zone, the holding element being configured to be able to be removed from the fixing zone, c. a fixing part delimiting at least a first securing element, the fixing device further comprising an external part which comprises a second securing element configured to be secured to the fixing part of the internal part, the external part being intended to hold the external functional element in position relative to the internal part.

[0010] Thus, the fixing device allows an external functional element to be installed and held in position on a formwork structure without having to resort to drilling or installing a fixing or gluing element after the casting fluid has hardened inside the formwork.

[0011] Also, the internal part is integrated into the formwork structure before pouring the casting fluid inside the formwork, which allows for optimal tear resistance of the internal part inside the formwork structure once the construction material has solidified.

[0012] The fixing device may further have one or more of the following characteristics, taken alone or in combination.

[0013] According to one embodiment of the invention, the external functional element may be a facing element, a plasterboard, an acoustic and / or thermal insulation panel, a scaffolding element, a rod, a box, a beam, a rail or a slab for example.

[0014] According to one embodiment of the invention, the second securing element is configured to be secured by form complementarity with the first securing element.

[0015] According to one embodiment of the invention, the peripheral edge is configured to ensure a seal for said casting fluid with respect to the fixing zone, the peripheral edge being substantially contained in a contact plane intended to be parallel to the extension axis and to come against the formwork element. According to one embodiment of the invention, the holding element is flush with the peripheral edge along the contact plane when the holding element occupies the insertion position.

[0016] According to one embodiment of the invention, the holding element projects relative to the peripheral edge when the holding element occupies the insertion position, so that the holding element is in contact against the formwork element without the peripheral edge being in contact against the formwork element.

[0017] According to one embodiment of the invention, the peripheral edge projects relative to the holding element when the holding element occupies the insertion position, so that the peripheral edge is in contact against the formwork element.

[0018] According to one embodiment of the invention, the holding element is configured to provide a seal for the casting fluid with respect to the fixing zone when the holding element occupies the insertion position.

[0019] According to one embodiment of the invention, the holding element is configured to at least partially close the communication between the fixing zone and the exterior of the contact part when the holding element occupies the insertion position.

[0020] According to one embodiment of the invention, the holding element is configured to allow access to the fixing part when the holding element occupies the retracted position. Advantageously, the holding element is removed in order to be reused during a next implementation of the invention.

[0021] According to one embodiment of the invention, the at least one first securing element is a fixing orifice, and in which the second securing element is a male element capable of being inserted inside said at least one fixing orifice following a movement oriented transversely to the extension axis to occupy a locking position, the fixing orifice and the male element respectively delimiting a first retaining element and a second retaining element of the same retaining mechanism, said first retaining element and said second retaining element being complementary and capable of cooperating with each other so that the retaining mechanism ensures locking of the male element in its locking position inside the at least one fixing orifice.

[0022] According to one embodiment of the invention, the second securing element is a fixing orifice, and the first securing element is a male element capable of being inserted inside said at least one fixing orifice following a movement oriented transversely to the contact plane to occupy a locking position, the fixing orifice and the male element respectively delimiting a first retaining element and a second retaining element of the same retaining mechanism, said first retaining element and said second retaining element being complementary and capable of cooperating with each other so that the retaining mechanism ensures locking of the male element in its locking position inside the at least one fixing orifice.

[0023] According to one embodiment of the invention, the first and second fastening elements may be hermaphroditic fastening elements, i.e., the first and second fastening elements are both male and female.

[0024] According to one embodiment of the invention, the holding element is made at least in part of a ferromagnetic element, such as a magnet for example.

[0025] According to one embodiment of the invention, the formwork element is made at least in part of a magnetic material. Advantageously, the holding element is magnetically held in position on the internal wall of the formwork element.

[0026] According to one embodiment of the invention, the fixing portion is positioned inside the fixing zone.

[0027] According to one embodiment of the invention, the fixing part is part of the same assembly as the internal part, thus forming a single-piece assembly.

[0028] According to one embodiment of the invention, the fixing part is located inside the space delimited by the fixing zone, while being distinct from the internal part.

[0029] According to one embodiment of the invention, the fixing part is mounted in the fixing zone so as to offer a possibility of movement in at least one direction parallel to the extension axis.

[0030] According to one embodiment of the invention, the fixing part is mounted in the fixing zone so as to offer a possibility of movement in at least one direction transverse to the extension axis.

[0031] According to one embodiment of the invention, the fixing part is mounted in the fixing zone so as to offer a possibility of movement in any direction on an axis parallel to the extension axis. According to one embodiment of the invention, the fixing device further comprises a deflection system interposed between the contact part and the fixing part, the deflection system being configured to exert a restoring force on the fixing part towards a nominal position of the fixing part, and to offer the possibility of movement of the fixing part relative to the contact part.

[0032] According to one embodiment of the invention, the deflection system comprises at least one elastically deformable fin.

[0033] According to one embodiment of the invention, the fixing part further comprises a conical part, the conical part comprising a top freely opening inside the first securing element.

[0034] According to one embodiment of the invention, the contact portion externally delimits a stop surface, said stop surface being configured to oppose the withdrawal of the fixing device from the formwork structure when a tensile force is exerted on the fixing portion.

[0035] According to one embodiment of the invention, the abutment surface is annular and / or frustoconical.

[0036] According to one embodiment of the invention, the fixing portion of the fixing device is configured to be visible from outside the formwork structure when the at least one formwork element is removed after the formwork structure has been poured and hardened. Thus, the location of the fixing portion can be easily identified with the naked eye, by photogrammetry or telemetry for example.

[0037] According to one embodiment of the invention, the invention further relates to a fixing matrix configured to allow the placement of a plurality of fixing devices, said fixing matrix comprising a plurality of receiving orifices, each receiving orifice being configured to at least partially receive a fixing device from among said plurality of fixing devices, the fixing matrix being configured to position the plurality of fixing devices on the internal wall of the at least one formwork element at different predetermined locations.

[0038] According to one embodiment of the invention, the invention further relates to a method for fixing a plurality of fixing devices to a shuttered structure, the fixing method comprising at least the following steps: providing a formwork comprising at least one formwork element, providing a plurality of fixing devices each being a fixing device, providing a fixing matrix, arranging the plurality of fixing devices inside the plurality of receiving orifices, placing the fixing matrix comprising the plurality of fixing devices on the inner wall of the at least one formwork element, removing the fixing matrix by detaching the plurality of fixing devices from the plurality of receiving orifices, the plurality of fixing devices being held in contact with the inner wall by each of the respective holding elements,introduction of a casting fluid inside a space delimited by the at least one formwork element, hardening of the casting fluid so as to form a shuttered structure, removal of the at least one formwork element, removal of the holding element of each of the fixing devices from the corresponding fixing zone so as to make the fixing part accessible, securing a second securing element of the external part of at least one of the fixing devices of the plurality of fixing devices with a first securing element of at least one of the fixing devices of the plurality of fixing devices.,

[0039] According to one embodiment of the invention, the casting fluid may be concrete, resin, earth, plaster or expanded polystyrene for example.

[0040] According to one embodiment of the invention, the casting fluid may be reinforced by a reinforcing element which is embedded in the casting fluid.

[0041] According to one embodiment of the invention, the reinforcement element is configured to position one or more fixing devices with respect to the at least one formwork element.

[0042] According to one embodiment of the invention, the fixing device comprises a positioning element, such as a fixing clip for example, provided on the fixing part of the internal part, and configured to be secured to the reinforcement element. Such a configuration of the invention advantageously makes it possible to facilitate the installation of the fixing devices on the one hand, and to increase the mechanical resistance to tearing of the internal part in the formwork structure. Brief description of the figures

[0043] The present invention will be better understood with the aid of the following description with reference to the appended figures, in which identical reference signs correspond to structurally and / or functionally identical or similar elements.

[0044] Figure 1 is a side sectional view of a shuttered structure comprising an internal part of a fixing device according to one embodiment of the invention;

[0045] Figure 2 is a partial perspective sectional view of the formwork structure comprising the internal part of the fixing device according to the embodiment of Figure 1;

[0046] Figure 3 is a partial perspective sectional view of the formwork structure comprising the fixing device according to the first embodiment of the invention;

[0047] Figure 4 is a side sectional view and a front view of the internal part of the fixing device according to a variant of the embodiment of the invention;

[0048] Figure 5 is a perspective view of a fixing die and a plurality of fixing devices according to the embodiment of the invention;

[0049] Figure 6 is a perspective view of a frame element and a plurality of fastening devices according to a variant embodiment of the invention.

[0050] Detailed description

[0051] Figures 1 to 3 represent all or part of a fixing device 1 intended to ensure the fixing of an external functional element on a formwork structure 2, the formwork structure 2 extending substantially parallel to an extension axis A1 and being obtained by pouring and hardening a casting fluid inside a formwork comprising at least one formwork element 3, such as a formwork for example. By casting fluid is meant any material compatible with being used in the field of construction such as concrete, resin, earth, plaster or expanded polystyrene for example. The casting fluid can also be reinforced by a reinforcing element which is embedded in the casting fluid.

[0052] By external functional element is meant an element intended to totally or partially cover the formwork structure 2, such as a facing element, a plasterboard, an acoustic and / or thermal insulation panel, a scaffolding element, a rod, a box, a beam, a rail or a slab for example. The fixing device 1 comprises an internal part 4 intended to be embedded in the formwork structure 2, as well as an external part 5 which makes it possible to ensure the maintenance of the external functional element with respect to the internal part 4.

[0053] In one embodiment of the invention shown in Figures 1 to 3, the internal part 4 comprises a contact part 6, a holding element 7 and a fixing part 8 which delimits a first securing element 9 configured to cooperate by form complementarity with a second securing element 10 provided on the external part 5.

[0054] The contact portion 6 internally delimits a fixing zone 11 which opens outwards at a peripheral edge 12. The peripheral edge 12 is configured to extend opposite an internal wall 13 of the formwork element 3 and substantially parallel to a contact plane PC. The contact portion 6 externally delimits a stop surface 14, said stop surface 14 being configured to oppose the withdrawal of the fixing device 1 from the shuttered structure 2 when a tensile force is exerted on the fixing portion 8. The stop surface 14 may be annular and / or frustoconical depending on the desired geometry of the fixing device 1.

[0055] The holding element 7 is made at least in part of a ferromagnetic element, such as a magnet for example, while the formwork element 3 is made at least in part of a magnetic material so that the holding element 7 is magnetically held in position on the inner wall 13 of the formwork element 3. The holding element 7 is configured to alternately occupy an insertion position in which it is inserted inside the fixing zone 11 so as to close the fluid communication between the fixing zone 11 and the outside of the contact part 6, and a withdrawal position in which the holding element 7 is configured to be able to be removed from the fixing zone 11 so as to allow access to the fixing part 8 from the outside of the shuttered structure 2.Advantageously, the holding element 7 is removed after solidification of the casting fluid in order to be reused during a subsequent implementation of the invention.

[0056] According to the embodiment of the invention as visible in the figures, the holding element 7 is flush with the peripheral edge 12 at the contact plane PC and is in contact with the internal wall 13 of the formwork element 3. However, according to other embodiments of the invention not shown in the figures, it is conceivable that the holding element 7 projects with the peripheral edge 12 when the holding element 7 occupies the insertion position, so that the holding element 7 is in contact against the formwork element 3; it is also conceivable that the peripheral edge 12 projects with the holding element 7 when the holding element 7 occupies the insertion position, so that the peripheral edge 12 is in contact against the formwork element 3. The fixing part 8 is provided inside the space delimited by the fixing zone 11, while being distinct from the internal part 4.The fixing part 8 further comprises a conical part 15, the conical part 15 having a top opening freely inside the first securing element 9. In other words, the top of the conical part 15 is the part having the smallest section. Thus the conical part 15 converges in the direction of the first securing element 9 and opens in the direction of the holding element 7. The fixing part 8 of the fixing device 1 is configured to be visible from the outside of the formwork structure 2 when the at least one formwork element 3 is removed after the casting and hardening of the formwork structure 2. Thus, the location of the fixing part 8 can be easily identified with the naked eye, by photogrammetry or by telemetry for example.

[0057] According to the embodiments of the invention shown in Figures 1 to 3, the first securing element 9 is a fixing orifice, and the second securing element 10 is a male element capable of being inserted inside the fixing orifice following a movement oriented transversely to the contact plane PC to occupy a locking position. The fixing orifice and the male element respectively delimit a first retaining element and a second retaining element of the same retaining mechanism, the first retaining element and the second retaining element being complementary and capable of cooperating with each other so that the retaining mechanism ensures locking of the male element in its locking position inside the at least one fixing orifice.According to an embodiment of the invention not shown in the figures, the first securing element 9 and the second securing element 10 may also be hermaphroditic fastening elements, that is to say they are both male and female.

[0058] The fixing device 1 further comprises a deflection system 16 which is interposed between the contact portion 6 and the fixing portion 8 of the internal part 4. The deflection system 16 is configured to exert a restoring force on the fixing portion 8 towards a nominal position of the fixing portion 8. The deflection system 16 is configured to offer the possibility of displacement of the fixing portion 8 relative to the contact portion 6 in any direction on a plane parallel to the contact plane PC. Furthermore, the deflection system 16 can offer a possibility of displacement in a direction which is transverse to the contact plane PC. The deflection system 16 is produced by means of a plurality of fins 17 which are each elastically deformable.

[0059] Figure 4 shows a variant of the embodiment of the invention. This variant differs in that the fixing part 8 of the internal part 4 comprises a plurality of first securing elements 9; it also differs in that the fixing part 8 is part of the same assembly as the internal part 4, thus forming a single-piece assembly. Advantageously, this variant embodiment makes it possible to adapt to the position of the second securing element 10 without resorting to a mobile compensation system such as the deflection system 16 shown in Figures 1 to 3.

[0060] The invention further relates to a fixing die 18 shown in Figure 5. The fixing die 18 is configured to allow the simultaneous placement of a plurality of fixing devices 1. The fixing die 18 comprises a plurality of receiving holes 19. Each receiving hole 19 is configured to at least partially receive a fixing device 1 from among said plurality of fixing devices 1. The fixing die 18 is configured to position the plurality of fixing devices on the inner wall 13 of the at least one formwork element 3 at different predetermined locations.

[0061] According to a variant of the embodiment shown in Figure 6, the fixing device 1 comprises a positioning element 20, such as a fixing clip for example, provided on the fixing part 8 of the internal part 4, and configured to be secured to a reinforcement element 200. The reinforcement element 200 is then configured to position one or more fixing devices 1 with respect to the formwork element 3.

[0062] Such a configuration of the invention advantageously makes it easier to install the fixing devices 1 inside the formwork on the one hand, and to increase the mechanical resistance to tearing of the internal part 4 in the shuttered structure 2 after hardening of the casting fluid on the other hand.

[0063] The invention also relates to a method for fixing a plurality of fixing devices 1, according to the first embodiment of the invention, to a shuttered structure 2. The fixing method comprises at least the following steps: providing a formwork comprising at least one formwork element 3, providing a plurality of fixing devices 1 according to the embodiment of the invention, providing a fixing matrix 18, arranging the plurality of fixing devices 1 inside the plurality of receiving orifices 19, placing the fixing matrix 18 comprising the plurality of fixing devices 1 on the inner wall 13 of the at least one formwork element 3, removing the fixing matrix 18 by detaching it and the plurality of fixing devices 1 from the plurality of receiving orifices 19,the plurality of fixing devices 1 being held in contact with the internal wall 13 by each of the respective positioning elements 7, introduction of a casting fluid inside a space delimited by the at least one formwork element 3, - hardening of the casting fluid so as to form a shuttered structure 2, removal of the at least one formwork element 3, removal of the holding element 7 of each of the fixing devices from the corresponding fixing zone 11 so as to make the fixing part 8 accessible, securing of a second securing element 10 of the external part 5 of at least one of the fixing devices 1 of the plurality of fixing devices 1 with a first securing element 9 of at least one of the fixing devices 1 of the plurality of fixing devices 1.,

[0064] Of course, the present invention is in no way limited to the embodiments described and illustrated, which have been given only as examples. Modifications remain possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims

CLAIMS 1. Fixing device (1) intended to ensure the fixing of an external functional element on a formwork structure (2), such as a formwork wall or a formwork slab for example, the formwork structure (2) extending parallel to an extension axis (A1) and being obtained by pouring and hardening a casting fluid inside a formwork comprising at least one formwork element (3), such as a formwork, the fixing device (1) comprising: an internal part (4) intended to be at least partially embedded in the formwork structure (2), and which comprises: a. a contact part (6), internally delimiting a fixing zone (11) opening outwards at a peripheral edge (12), b.a holding element (7), configured to be in contact with an internal wall (13) of the at least one formwork element (3) at the time of said casting, the holding element (7) being able to occupy an insertion position in which all or part of the holding element (7) is inserted inside at least a part of the fixing zone (11), the holding element (7) being configured to be able to be removed from the fixing zone (11), c. a fixing part (8) delimiting at least a first securing element (9), the fixing device (1) further comprising an external part (5) which comprises a second securing element (10) configured to be secured to the fixing part (8) of the internal part (4), the external part (8) being intended to hold the external functional element in position relative to the internal part (4).

2. Fixing device (1) according to claim 1, wherein the peripheral edge (12) is configured to ensure a seal for said casting fluid with respect to the fixing zone (11), the peripheral edge (12) being contained in a contact plane (PC) intended to be parallel to the extension axis (A1) and to come against the formwork element (3).

3. Fastening device (1) according to claim 2, wherein the holding element (7) is flush with the peripheral edge (12) along the contact plane (PC) when the holding element (7) occupies the insertion position.

4. Fixing device (1) according to claim 1, wherein the holding element (7) projects relative to the peripheral edge (12) when the holding element (7) occupies the insertion position, so that the holding element (7) is in contact against the formwork element (3) without the peripheral edge (12) being in contact against the formwork element (3).

5. Fastening device (1) according to one of claims 1 to 4, wherein the holding element (7) is configured to ensure a seal for the casting fluid with respect to the fastening zone (11) when the holding element (7) occupies the insertion position.

6. Fastening device (1) according to any one of claims 1 to 5, wherein the at least one first securing element (9) is a fastening orifice, and wherein the second securing element (10) is a male element capable of being inserted inside said at least one fastening orifice following a movement oriented transversely to the extension axis (A1) to occupy a locking position, the fastening orifice and the male element respectively delimiting a first retaining element and a second retaining element of the same retaining mechanism, said first retaining element and said second retaining element being complementary and capable of cooperating with each other so that the retaining mechanism ensures locking of the male element in its locking position inside the at least one fastening orifice.

7. Fixing arrangement (1) according to any one of claims 1 to 6, in which the holding element (7) is made at least in part of a ferromagnetic element, such as a magnet for example.

8. Fastening device (1) according to any one of claims 1 to 7, wherein the fastening portion (8) is positioned inside the fastening zone (11).

9. Fixing device (1) according to any one of claims 1 to 8, wherein the fixing part (8) is mounted in the fixing zone (11) so as to offer a possibility of movement in at least one direction parallel to the extension axis (A1).

10. Fixing device (1) according to any one of claims 1 to 9, wherein the fixing part (8) is mounted in the fixing zone (11) so as to offer a possibility of movement in at least one direction transverse to the extension axis (A1).

11. Fixing device (1) according to any one of claims 1 to 10, wherein the fixing part (8) is mounted in the fixing zone (11) so as to offer a possibility of movement in any direction on an axis parallel to the extension axis (A1).

12. Fastening device (1) according to any one of claims 8 to 11, which further comprises a movement system (16) interposed between the contact part (6) and the fixing part (8), the movement system (16) being configured to exert a return force on the fixing part (8) towards a nominal position of the fixing part (8), and to offer the possibility of movement of the fixing part (8) relative to the contact part (6).

13. Fixing device (1) according to the preceding claim, in which the movement system (16) comprises at least one elastically deformable fin (17).

14. Fastening device (1) according to any one of the preceding claims, in which the fastening part (8) further comprises a conical part (15), the conical part (15) comprising a top opening freely inside the first securing element (9).

15. Fixing matrix (18) configured to allow the placement of a plurality of fixing devices (1) each according to any one of claims 1 to 14, said fixing matrix (18) comprising a plurality of receiving orifices (19), each receiving orifice (19) being configured to receive at least partially a fixing device (1) from among said plurality of fixing devices (1), the fixing matrix (18) being configured to position the plurality of fixing devices (1) on the internal wall (13) of the at least one formwork element (3) at different predetermined locations.

16. A method of fixing a plurality of fixing devices (1) to a formwork structure (2), the fixing method comprising at least the following steps: providing a formwork comprising at least one formwork element (3), providing a plurality of fixing devices (1) each being a fixing device (1) according to any one of claims 1 to 14, providing a fixing matrix (18) according to claim 15, arranging the plurality of fixing devices (1) inside the plurality of receiving holes (19), placing the fixing matrix (18) comprising the plurality of fixing devices (1) on the inner wall (13) of the at least one formwork element (3), removing the fixing matrix (18) by separating the plurality of fixing devices (1) from the plurality of receiving orifices (19), the plurality of fixing devices (1) being held in contact with the inner wall (13) by each of the respective holding elements (7), introducing a casting fluid into a space delimited by the at least one formwork element (3), hardening the casting fluid so as to form a shuttered structure (2), - removing the at least one formwork element (3), removing the holding element (7) from each of the fixing devices (1) outside the corresponding fixing zone (11) so as to make the fixing part (8) accessible,securing a second securing element (10) of the external part (5) of at least one of the fixing devices (1) of the plurality of fixing devices (1) with a first securing element (9) of at least one of the fixing devices (1) of the plurality of fixing devices (1).,

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